Molding-machine.



PATENTED FEB. 12, 1907. H. BESSER, MOLDING MACHINE.

APPLICATION FILED MAY 23 1906 2 sums-sum 1.

WITNESSES 8w w H A TTOH/VEYS THE mum's PETERS co., WASHINGTON, B4 c.

No. 844,235. y PATENTED FEB. 12,.190'7.

H. BESSER.

MOLDING MACHINE.

APPLICATION FILED MAY 23, 1906.

l N VE N TOR Jferm an Besaer Arron/v5 rs WITNESSES TH E NORRIS PETERS co., WASHINGTON, n. c.

outrun sra'rns Parser orrion MOLDING-MACHINE.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed May 23, 1906. Serial No. 318.325.

To all whom it may concern:

Be it known that I, HERMAN BESSER, a citizen of the United States, and a resident of Alpena, in the county of Alpena and State of Michigan, have invented a new and Improved Molding-Machine, of which the following is a full, clear, and exact description.

My invention relates to molding-machines, my more particular object being to produce an eflicient type of molding-machine used more particularly for molding blockssuch, for instance, as are employed in building.

Among the several objects of my invention are the following: first, to quicken the closing of the mold, so as to save time; second, to render certain parts of the mold as nearly as possible automatic in their movements; third, to enable blocks to be molded directly upon the ground or any similar surface, so that the blocks when finished will continue to occupy the positions originally occupied by the materials of which the blocks are made; fourth, to facilitate the construction of waterproof blocks, and, fifth, to provide certain constructional features whereby the general efficiency of the machine is greatly facilitated.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the iigures.

Figure 1 is a side elevation showing my molding-machine with its parts in the posi tions they occupy while the mold is closed upon the material. Fig. 2 is a plan view of the same. Fig. 3 is an end elevation of the mold, the several parts occupying the positions above indicated. Fig. 4 is a plan view of the mold open to its widest limits after being disengaged from the completed block. Fig. 5 is a vertical longitudinal section through the mold upon the line 5 5 of Fig. 4, showing the conformity of the end cores and the relative positions of various parts. Fig. 6 is a central vertical cross-section through the mold and showing it as filled with the materials to be made into block form; and Fig. 7 is a perspective view of a block from which the mold has been removed, but upon which the bands 12 13 have not as yet been removed.

The side walls are shown at 8 and are provided at their bottoms with outwardly-projecting flanges or pedestals 9, which, owing to their flat under surfaces, prevent the side 1 walls and other parts connected therewith from being forced downward into the ground. The side walls 8 are further provided at their upper edges with hopper-boards 10 and with grooves 11, into which an annular band 12, of metal, preferably iron, may be inserted. As will be seen in Fig. 6, this band is flush at its inner surface with the inner surface of the side walls 8.

The band 12 is of substantially U shape and extends about three-quarters of the distance around the block when finished, as will be seen from Fig. 7. Another band 13, also of substantially U shape, but of a length approximating the width only of the block, is fitted upon the outer ends of the band 12. The two bands together constitute a rectangular structure, the inner surface of which corresponds to the upper periphery of the block to be molded. Uore-blocks 15, each of the conformity indicated more particularly in Figs. 5 and 6, are removably connected'with the inner surfaces of the walls 8 and are disposed oppositely to each other. Guide-rods 1 6 are mounted rigidly up on one of the walls 8 and disposed adjacent to the top thereof, other guide-rods 17 being mounted upon the opposite side walls 8 and extending in a direction contrary to that of the guide-rods 16. Slideways 18 are mounted upon the outer ends of the side walls, and through these slideways the guide-rods are threaded, as indicated, for instance, in Fig. .3. Angle-blocks 19 are connected rigidly with the side walls 8, as indicated in Fig. 4. These angle blocks are mounted rigidly upon boards 20, which are provided with bevel surfaces 21, registering with the angleblocks and virtually forming continuations thereof, as will be understood from Fig. 5. A substantially U-shaped metallic bar 22 is journaled at two points 23 and is free to swing when the outer central portion of the bar is grasped by the hand and raised or'depressed, as the case may be. This U-shaped bar therefore serves the pur ose of a double lever. Mounted upon this ever are bosses 24 25 of the shape indicated in Fig. 3, the bosses 24 being directed upwardly and the bosses 25 being directed downwardly, so as to engage any apertures 26 27 within the guide-rods 16 17 when the lever 22 is depressed, as may be understood from Fig. 2. When, however, the lever is raised, the bosses 24 25 are removed from the apertures 26 27 and the guide-rods 16 are thus free to move. In other words, the guide rods are locked when the lever 22 occupies the position indicated in Fig. 3 and are released when the lever is turned upon its journals 23. By this means the opposite side walls 8 are held together when desired and are re leased at will. A handle 28 is mounted upon one of the side walls 8, and this handle, together with a portion of the lever 22, is grasped by the operator for the purpose of pulling the side walls apart in order to release the mold from the finished block.

End walls are shown at 29 and are each providedwith a groove 30, registering with the grooves 11 in the side walls 8. The end walls are provided with bevel surfaces 31, which engage the inner surfaces of the angleblocks 19 and serve to move the end blocks toward each other when the side walls 8 are forced toward each other. This movement takes place because the angle-blocks 19 in moving against the bevel surfaces 31 force each of the end walls 29 in a lateral direction, so that these end Walls approach each other, as will be understood from Fig. 4. Two shields 32, each provided with a flange 33, are mounted directly upon the end walls 29 by means of fastenings 34 and are movable with the end walls. These shields are for the purpose of preventing the material used in molding from improperly entering certain parts of the mold. Each end wall 29 is provided vwith a slideway 35, through which passes a slide-bar 36. The latter is provided adjacent to its ends with slots 37, and through these slots ass pivots 38, each movable in the general longitudinal direction of the slide-bar. Links 39 are connected With the pivots 38 and are journaled at 40, being thus virtually pivoted upon one of the side walls 8. Similarly upon the opposite side walls 8 two links 41 are pivoted at 43 and engage pivots 42, passing through the slots 37. Grooves 45 are cut into the side walls 8 for the purpose of allowing room for the band 13, shown at the upper lefthand corner of Fig. 7. The end cores are shown at 46 and are removably secured upon the inner sides of the end walls 29, as indicated in Fig. 5. These cores preferably register with the cores 15 of the side wallsthat is, if the block to be molded is to be cored upon all four of its sides, as indicated in Fig. 7. Angle blocks 47 are connected rigidly with the hopper-boards 10 and serve to fill in the space from the outer ends of these ho per-boards to the end boards 29. The anglh-blocks 47 being held rigidly in position constitute, when the end blocks 30 are closedthat is, forced into their innermost positions-virtually a part of the ho per at the top of the device. The side wa ls 8 are each provided with two-slides 48, through which pass the slide-rods 36. The block to be operated upon is shown at 49 and is provided with grooves 50 and otherwise conforms to the inner surfaces of the mold.

The upper surface of the blocks 49 may be of wet material, such as unfinished concrete, as indicated at 50. A top plate 52 is laid upon the upper surface of the material, being operated upon and forced into position before the mold is removed. A gage-plate 53 is adjustably inserted intermediate of the side walls when the mold is closed. This gage-plate is entirely detached and is of course removable when the mold is open. The purpose of the gage-plate is to make the molding-blocks longer or shorter, or, in other words, in making so called fragmentary blocks it virtually takes the place of one of the end walls, the space intermediate of the other end walls and the gage-plate being filled with the material.

The operation of my device is as follows: The operator grasps the handle 28 with one hand and the U-shaped lever 22 (serving as a handle) with the other hand. He raises the U-shaped lever, so as to withdraw the bosses 24 25 from the slide-rods 16 17. He now pulls the two handles directly apart. The side walls carrying the cores 15 are thus moved apart, and this causes the links 39 41 to move angularly upon their pivots 40. The rods 36, carrying the end plates 29, are thus moved away from each other. It is by means of the movements thus described that the mold as a whole is removed from the finished block, so as to leave the same standing, as indicated in Fig. 7. In order to close the mold, the handle 28 and the lever 22 are forced toward each other when the reverse movement takes placethat is to say,

is now placed in the mold and tamped firmly,

so as to fill the mold to within an inch or two of the top. A comparatively small quantity of so-called wet concrete is now poured over the solid concrete, and the filling of the mold to its top is thus completed. The face-plate 52 is now laid upon the wet concrete and pressed firmly downward, so as to face the top of the block. The face-plate is now taken up, the handle 28 and the lever 22 are drawn apart, and the mold is thus released from the block. The iron bands around the top of the mold are allowed to remain until the wet concrete has set sufficiently to be firm. They are then removed.

I do not limit myself to the use of the bands 12 13 of the particular shape shown.

Neither do I limit myself to any particular shape for any part or parts, nor to the employment of any certain materials for the construction of the same. The metallic bands 12 13 having been previously placed within the grooves 11 30 45, as above eX- plained, they remain around the block after the mold is opened, as indicated in Fi 7. WVhen, however, the portion 51 of the b ock containing the water has set sufficiently to become hard, the bands 12 13 are removed. In this way it is practicable to mold blocks face upward, the upper surfaces of the blocks being waterproof. The handles 28 22 being pressed toward each other, so that the side walls 8 and the end walls 30 occupy the position indicated in Fig. 1, and the bands 12 13 being in position, the mold is ready for filling. The top plate 52 may be forced downwardly upon the unfinished block, so as to ive the upper surface of the same any desired conformity, as indicated in Fig. 6. The block having acquired the shape of the inner surface of the mold and the handles being pulled apart, as above explained, the mold assumes the shape indicated in Fig. 4, and the block 40 is left standing, as indicated in Fig. 7, with the metallic bands 12 13 encircling its upper periphery.

It will be understood that while'the material is being filled into the mold all move ments of both the side walls and the end walls are prevented, for the reason that the bosses do not permit the slide-rods 16 17 to be withdrawn from the slideways 18. The shields 32 prevent the falling of the materials intermediate of the angle-blocks 19.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a plurality of walls movable toward and from each other, mechanism for maintaining all of said walls in a definite relation to each other, and shields mounted upon certain of said walls for preventing the dropping of the material oper ated upon intothe working parts of the device.

2. The combination of a plurality of walls provided with grooves, means for moving said walls relatively to each other, and metallic bands detachably mounted within said rooves for the purpose of remaining upon the block after the removal of said walls therefrom.

being provided with a groove, the grooves of the respective walls registering with each other, and metallic bands detachable from said walls and sunken within said grooves for the purpose of acting upon the material to be molded between said walls.

4. The combination of a plurality of walls provided with grooves, said walls being movable relatively to each other, metallic bands sunken within said grooves and provided with surfaces flush with the inner surfaces of said walls, and means for permitting said walls to be taken apart.

5. The combination of a mold made of parts movable relatively to each other for the purpose of releasing the finished block from said mold, said parts of said mold being provided with grooves, and a band adapted to be mounted within said grooves and to adhere temporarily to said block when finished.

6. The combination of walls movable relatively to each other for the purpose of forming and releasing a block, said walls being provided adjacent to their edges with shoul ders, a metallic band of a thickness corresponding to the width of said shoulders and adapted to engage the same, and means for securing said walls together, so as to allow movement therebetween.

7. In a mold, the combination of walls movable relatively to each other, guide-rods and slideways mounted upon said walls so as to maintain the same in a predetermined relation, and a lever mounted upon one of said walls and provided with looking members for engaging said guide-rods, thereby holding the walls in predetermined fixed positions suitable for molding.

8. In a mold, the combination of a frame provided with angle-blocks and with walls connected rigidly in relation thereto, means for moving said walls relatively to each other, other walls disposed each at an angle rela tively to said first-mentioned walls and provided with beveled surfaces engaging-said angle-blocks, said second-mentioned walls being movable by said angle-blocks.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.-

BYRON H. OLDs, J. R. MCHARG. 

